1.1 本规程适用于隧道孔径高达1 m宽×1 m高的所有基于X射线的安检系统，无论是传统X射线系统还是提供投影或投影/散射图像的爆炸物检测系统。 1.2 本规程适用于用于检查行李、包裹、货物或邮件中违禁物品（如武器、炸药和爆炸装置）的X射线系统。 1.3 本实践建立了评估系统的定量和定性方法。本规程未规定任何特定应用的最低性能要求。 1.4 该实践依赖于使用三种不同的标准测试对象:ASTM X射线测试对象 – HP，用于评估基于人类感知的性能参数；ASTM X射线测试对象 – RT，用于常规测试，以评估操作；和ASTM X射线测试对象 – OE，用于客观评估和评分系统的技术能力。随后描述了特定的测试对象，并在本实践中称为HP测试对象、RT测试对象和OE测试对象。 1.4.1 部分RT- 本部分仅考虑系统操作和功能的常规和定期验证方法，因此需要使用ASTM X- 射线测试对象 – RT。 1.4.2 零件HP- 本部分仅考虑ASTM X射线测试对象的方法和使用 – 惠普。 1.4.3 OE部分- 本部分仅考虑客观评估系统技术能力的方法，因此需要使用ASTM X射线测试对象 – OE。 1.5 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.6 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.7 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。

1.1 This practice applies to all X-ray-based screening systems with tunnel apertures up to 1 m wide × 1 m high, whether they are conventional X-ray systems or explosives detection systems, that provide a projection or projection/scatter image. 1.2 This practice applies to X-ray systems used for the screening for prohibited items such as weapons, explosives, and explosive devices in baggage, packages, cargo, or mail. 1.3 This practice establishes quantitative and qualitative methods for evaluating the systems. This practice does not establish minimum performance requirements for any particular application. 1.4 This practice relies upon the use of three different standard test objects: ASTM X-ray test object – HP, for evaluating human perception based performance parameters; ASTM X-ray test object – RT, for routine testing to assess operation; and ASTM X-ray test object – OE, for objective evaluation and scoring of the technical capability of the system. The specific test objects are subsequently described and referred to in this practice as the HP test object, RT test object, and OE test object. 1.4.1 Part RT— This part considers only the methods for routine and periodic verification of system operation and function, and therefore requires use of ASTM X-ray test object – RT. 1.4.2 Part HP— This part considers only the methods for, and use of, the ASTM X-ray test object – HP. 1.4.3 Part OE— This part considers only the methods for objective evaluation of the technical capabilities of a system, and therefore requires use of the ASTM X-ray test object – OE. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.